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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '670738c212e9eb33a41665d33e4f7c486076534273aa258f94a49ef8df9101e5' 
  AND token = 'dzVIAp0msRm9o4cgWuogoHwzK6SpAJuSwiP2syhRKzw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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