Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c412d2fc20e21a445ba067e922dd5678a91c859dfa80a39d1333d27ea9986977' 
  AND token = 'bC1ALIOp8pXGnCtzFuQGEAZ2tlNHD/QFngGrMlhQ9k0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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