Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9c74eca57b1f01eedf5aeca868bfada322b9e49be247994ed87242a210e2f71e' 
  AND token = '/7F+t2JH62o956YCQRU3s92A2SKj/p84ipur+9NVMNQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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