Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3059a12f6172a3deaa487f16ccc96df474e24a77932bd9d40d78c6367c3a037e' 
  AND token = 'd7v41lRJidZ1AIIQGLfegtT1CoAAODUyh+ELkHPwRCk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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