SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1e60e2188e10203e15c505f9b31bd18cf2fe9b83b1eb28fe63a85277a0e6c198' 
  AND token = 'Hgrt+oI7xikDuM3d/d00D/UDhmtfdaKHoZ1acd4P1l8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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