Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '28887c1db52a3c8670e1b54d47380ecd8028277aee572846d73be853cdc45758' 
  AND token = 'yFHVgE/mhI62VFdC4yd2py7Ap/ReV/tbftiiVDgkLx8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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