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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dae1380ff87a1c374356cccc1b5f84a2fa7f8630b7dc4b8ca94b0f352cddd66b' 
  AND token = 'A9w/SD5ilax6LZmTFK53bggvj4t0f6v2Z/k8bE7+9A0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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