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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05843adaf9c1e8fe6a09ca5cfaf6b052d06c82aebcd5a14b7c524b15a770ebde' 
  AND token = 'v70rDIrui3IZOzNNZ+VEWs64ivBXJI4enCz7PR8jccg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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