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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '6f58c6f8d395b186b9403ec8a2d8e50a1f62ae8e193c689511005eeb922e5ecb' 
  AND token = 'CwAd8TxH4V71OMTivi4DMTX1fvsadVu3bJ2X0BTJqXg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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