Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4955e99daf9d49e14b4a1a716818c047031deae0694601012204d4c8706378be' 
  AND token = 'Aa5xueBUfbULUPVC1+8AxtVdbFzHN+Y8ZN0/FHVP8yQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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