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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0d0d008a5010f4b5e96b5dd968488ae08bca6ccb2e8ee50cd89bd1c09ce8d0a4' 
  AND token = 'rUbBps2TplJWjeYgKzw2uM4KuyMAXZPCOvjdqtOFRts=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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