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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3d405b7c2397d3cfbb71bbefc8207efe4f901b11be6eb0a9c4e2c4dc74e3f22e' 
  AND token = 'YR/8isOgj68LwY7aXEy/zqx3nVPXAr+OSMtLoGroTMQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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