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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '732e353026ac25741cdaf752063d930e0ae8f178f9aec0a7d13bb6659bf15db7' 
  AND token = 'ZpdS0CioAc4IaHArje5dJPvJkbWuRR7V/5eRZ+URBRI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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