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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65569e7ca274e359b619bf4c98e6bb63eda4450c0bfc39df5768f80f3ca9b91b' 
  AND token = 'phJ/3TLyoppL5imfOzQWWFaXpaFNK/RkEgId1GS16V8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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