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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9d54b7fa392606f8f6d0e2af94aa3d2b7dd81ac0cbb6ffd5c6f8dd7f0c6f867e' 
  AND token = '6gt1gavRGjj/wbV6m7RFkV/0VnetjaTYxMTi5HMrJbQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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