Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fdf07ee8d3528e67b5c64fb35df6ebf977426c6180bd8f5742e585da317b22ce' 
  AND token = 'qpHXnpjn861itgC2ejubyZRiPx6BwpLQcbS2ik7GTp8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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