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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '33bff4b4f256d3171a18dce644d551c030544df66d221331ac8a7ea1272583dc' 
  AND token = 'iKSIO4UnFXanBKBPcyFMcmiIPq4FwJQs1QP94iT4axQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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