Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e2336dc614bc3fe5e04b46b405f243d73e006980df302c4465161edefe950c87' 
  AND token = 'O91GQOmY6wB2IWoVZGYp0uZ8RrbeQXJUPF5C7uhwaBs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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