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SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'b0db61b83e3f6e9e52bbcbd1fa0b802998e55333573bb1b7107cc82e4178e173' 
  AND token = '3jqUHczACXG4E3iXsD5CUnVv9xIkjKCrp4vEsnNHckA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00130

JSON explain

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