Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bd7467343be32d0a5030e905c2a85106422509d816f2af5e92415d4c09b29c17' 
  AND token = 'Gq7DiXdtJOWoqBMV4aTSJhtYtNYdghpVQbT0p/MREyo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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