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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'caae00d2735e205cc6bbec9f6c7c23300660dcf593e6278d05f04dbe0ecfc2ac' 
  AND token = '+uOnEc/tDl4REck6smI88sfeVuGPo6HwsJAK5j657nM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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