Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f275a31adacafb369107deb32b515969eb577513b569d4c32a250a16b4dc1e36' 
  AND token = 'ZixPgXh1neXZGKMoh7xpIDjlb+BGxZ+ddKRJXIxDzNY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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