Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7d68b9b1ae7e999179d49808550163a9df7a3258be4e4c23dc738208e3586711' 
  AND token = 'cvjCCQ8myZiil5xwDOlCfE2rDoo+quK6+viB2X5U8Qg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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