Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd7de4418e4ec56aa58259b86b0dcded94a1f54b882416954fe85e2cf347f4b71' 
  AND token = 'P1XCRXBBwSfJkaXnDStI3vnhRQqBUwfF67n2wjDkAcE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00067

JSON explain

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