Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '10f3b19c54f6c242c8ae889d7dbad8f7a4b69909125180c8c8b4bc2fbe3c02e5' 
  AND token = 'pM7QbjC7B3sFOgjjfZVlA044+1d66+cs2i43PN+JkBY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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