Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '850a089369d9f97c90c5bf019288fdf3aae3aaa219546bfa60bab7508a33b2a4' 
  AND token = 'In1Ag+NXORXKpJrAzPw63ORStwaxPYdLGsDu/lqtTRA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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