Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1cf175947a9506ecb0faa3ef7d47eba5e2cb4585a4c1f0460b03c5940b22226a' 
  AND token = 'LoHinGb8nNLBpI2Nk7u3LL5ZdIsSlSCGlUPgkAsHr0U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}