SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7c1970f350583f9f4524540103f6cfcc0c4e0b5ebbcb2c3e221b0156fec9a911' 
  AND token = 'h4uq+SZ+zjSLyFYIVqjLbjfwdNPxdJxW3toDc9TaPGw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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