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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '63ebf5a3d8cb27cd74ae0371ef70f92cbe42f3806c03e2b3bdfed6f73fbdba71' 
  AND token = 'k+Ev0hs28kV1m2zLCz3dadLK0H9E3kNfZ6YfwkIKs7g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00012

JSON explain

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