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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5948f9dd78bcfb2a844441b5c01374151b0ded0cac884c0ea17589e64fcddd79' 
  AND token = 'qwrttZoa1z8YmRVcx1LCwjDI5Ryks9f7DYuGLRzmdLs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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