Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f0adad1b254fe38996d8d6c6b0e2665f668121f3de3a83378df39076e80fd6c2' 
  AND token = 'zFkAlNADC1U16eYnjAMZfYOcmNhR6YkkfYGeE1dEwxw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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