Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3e9b928c135b54e17fdeb7bad51da4be4c279dfb7daf80127f8bc3c4cf5048c6' 
  AND token = 'Q8W9p15I5DPpAzT1qgK+Umo22qMIEzscswE3zaCe3aM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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