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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0607e67debaf67f88aa95408507575b5ae1bb69b600aa6a68f82faa93d7515ec' 
  AND token = 'lPHqGV+ZR+xJIwNK+G1yEZrak+WaP+BDz5NGvJZOy04=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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