Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '62a086edf2c0857369788bea4cc7fcbae9b5d985de8392c7b3ca03ffe6559087' 
  AND token = 'XSa/aMJy3Ig3pPMERwJkzzs9+MFXkg0nceZpNYv6Ofs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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