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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9fcfeaa6429a8bf8fa4ed0a226ef06b58909ae2530e7bfb581f5c2b8e96f7fa1' 
  AND token = 'Lu4dXrnti+JPu9dfDyyGFJFwad/uwAin1cNdQi6oeWc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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