Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dd06637f0f4e4753fae56bfa44848fc9c37e1531f59971cf03783520446905af' 
  AND token = 'kbHVCAAZ/mayFAW0QSWDNQYoEPJ8hbysQV/nNrci9/c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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