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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a4aa1163fbf46e86d0e99ae81f2d62a9c0bcad3b85ae741ba2b9d0ed64867ab1' 
  AND token = 'HmlyVSlrLYjgYvpCzZH4as11oZhLb70gu1gZOMwa8vE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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