Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '59dd78fdff94b6ee665d8f475b70173d0809841d19ebe2c8fb8130d66af9589a' 
  AND token = '5LEgx1E5zhK4KCRbdeItF9KHhFY53BUG7Ef7faZJodU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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