Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd194de473cae6e42004ececb466f226a0e99beb6aa6ed38fea01c71db1a30101' 
  AND token = '7DaxOQPRiRqqw1NsCAjffcoqOBA9TP67mfKQDEXPU8I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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