Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eccbcd1f8a3e98380eb9ec3ad110299d7218b2ef8701c3b2dda996c4dc9a7c25' 
  AND token = 'dTu2B1EyL0OjNd36twc6OuKU3JukkGLWuBpBdhoc93o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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