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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aae6cf3e3d7112c396d9c93b19fe430f028ab10eb69a348037e894c55f98dcd2' 
  AND token = 'kpJg8MIaRS7O7/aCtNptyicmnvAsz8NlrNMRrM2DTq8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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