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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '072716bc5faed731175499b3f18a4410dd932b700e2898cf17a723fd04fae87d' 
  AND token = 'yBxoMsD0tut7Szg8mISmNWtYBQ/FtK1iNBSI2TtOxT4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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