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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'b0e26be8b10f90784730cdd9cf0d0bb61c346da8d4549837092eb058c2415f07' 
  AND token = 'moliQ9UfcrF/YQaPnHkkOJpgKGOTpx22PAar8zRup/M=' 
  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"
    }
  }
}