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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '80415a8c2d2f97adf929e4af8e0886f5e758951ca1e155aa82f51d3b78b3f648' 
  AND token = 'zuKIM8JkG1LjcgGdVsD89G/FyFydaMA4fz+nnt1jqmU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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