Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e59bc13a8a05bd09f471257f7a7a8d092e4512ed25c67f76bd35db4dd0f28fd6' 
  AND token = 'trUOCwZF7wawZxtAU3kk+MdEtthDN/U+16OFFVtU/ZI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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