Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9d1e9e2e20571bd92e5a310028fb450270c2ddb8629e2386345381c635831c8f' 
  AND token = 'ISNyJT4zi03WIqG7lmW0R9fgYLdC5BLDLJdBjBvkmLs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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