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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'ac89c91b839be265a751f1b6f9cb2f15f9c8c01883f1e6e0f3827e0c461a5077' 
  AND token = 'J04NKjm+QcZJvANvF9zKkoP6angywJ+wL+rvd3IUE9c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00008

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}