Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ed80d1d17fa92ad14f4892ff0d9d1546896ec6cd1d0529f82164c8ecdf04641c' 
  AND token = 'kqm6TYJdontsDtUjFccuudly5p0AFVSw0/0dJDPGDCw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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