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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '66b0c73858d79e3a7d518846283ae0c1e568d5e5dbc133649b10403c85406f65' 
  AND token = 'idM5J7hBLNZ/n5Ei/wGT9PopX9lkoilRb8K9MLzUvF8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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