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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '22285420965507128cfcfca0154af403b20f69d1e461ce9bc4f00e844e8f2bdb' 
  AND token = 'OfOzPoKKJbEvbD35ni94iyfkDJU5hgAO3iM1ztX9NSg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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