Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'aeffee5b9349d75de3df7f1f2f6e4d97074d9293464119b63e078976a8c9aac5' 
  AND token = 'S3CWXejyMJvS4GBTQDvpCSxDfBsC/2Dor8VN8InBcyE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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