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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd93fa13dd41e5e7d1cbf89172a8b189a80bd4d6e0ed1a676dd4a7ff4b743e5a6' 
  AND token = 'ER5H4LP6hVspWzW0LYHQrzN4k8hR4ZSu9C0xSAiZdH0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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