Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5ee0801b5e66a398e177e494a1172a7aad73a4c6cba9d8f439a06b5af7c1533b' 
  AND token = '8Ro7TJE3PYFqB5AqB27EzoL1ejyY4P1SrVCkjYNwdPY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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