Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8bf4af06c622bb9b54b38ef1544a9cc440dc27d7ed9a5c6902da01166d127a72' 
  AND token = 'xI2rhVeglf34vfqltFH9DVEqFb1YsldhAc+YRK7Nilk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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