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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9399c320879f7bbdd2d9bfc97923210af38b6568d82a922f4e6099d0e0c85d44' 
  AND token = 'VOWHtGXm3Q5SNnRoEESoBv/GDlF54yw+QB1mu5tORQY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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