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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '64425af50ddf830cf212e2dd6328e3b447df23b0045363bcc23be82456ed4d29' 
  AND token = 'TjzZ4NOqT5Iw3ZNuj/GOrnDhURePYXngprQbhVO6SU0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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