SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1d06322762059327b685616eebb07c0c03ea330f52232a85db6693169ac3ff49' 
  AND token = 'fFPZDIxcz+rRQwfpHvT8vJxMqp6yhl5mOvzgJ/fQMVo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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