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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5115fced0a3613516caa0e22bdc78d9c4a286347efcab2069fc3fe64458cecda' 
  AND token = 'Q5RNMoM2A3vzTA/9YII/I84hn83i3gxf9QKnSC7bRl8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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