SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '6891f6dc63cf88237cba3a55dcd6b8779cd6fe838a1f707f749bfb8211b17911' 
  AND token = 'w1ghKzvi/rHpYAVvGEftO+Kxxy5kF8cr6D7p8ij8bTU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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