Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '178d3931f9da0e3b6505415c5e7c6eaba6b6a00ba06d0dd289875d6da5909ad1' 
  AND token = 'jhvEYdyupuus5Cfrofm1sc3Ev4HK9VQq6Fs6RDLN+V4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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