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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f70f78c446b5c004b58a58477598878cfd8beaa205e23bf45e5c06b5744bf60f' 
  AND token = 'bWwefjnDw7fd/CMQmJ4li9ByrXivsZg4MM7OTGNS87Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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