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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3e3f2fe6ac665ed9210a06ca641fe41f7c4865c3a1f10246f7f05c5d4bf51dac' 
  AND token = 'Ibc5vW//odcuueQz1kG6BPcF02n48b8QQRxGREFflzc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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