Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '589fbc02033ef82437ddadd861dbdd8a3bf0d26b96264af7da1cbec999633c4d' 
  AND token = 'NX34GuSqJrGLibyVI7e6VlRFcnftB9MkhPJuB8HPwAc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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