Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c112822aa1d8341331d2296101a070f4343b23a966eb11ea9b24c37913e8939b' 
  AND token = 'AS1LcN0AM73m5CEgLSEIfX4nRtrePA3FB+YCpbGFZgo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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