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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '56965c19133c3ef0f25a5314dcf3f6132f08f8b9b13953460d52c12af99be0bc' 
  AND token = 'bAVmxtgYnADxo8LCdNdfDPGBEi0RMjgloLkho1SKbFY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00012

JSON explain

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